STIHL FC 85 User manual

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1FC 85

English / USA

Printing inks contain vegetable oils;

paper can be recycled.

Printed on chlorine-free paper.© ANDREAS STIHL AG & Co. KG, 2003

0458 245 3021. M1. E3. PM. Printed in USA

STIHl

Contents

Guide to Using this Manual .............. 2

Safety Precautions ........................... 3

Working Techniques ....................... 12

Mounting the Loop Handle ............. 15

Adjusting the Throttle Cable* .......... 15

Fitting the Cutting Blade ................. 16

Fuel ................................................ 17

Fueling ............................................ 18

Starting / Stopping

the Engine ...................................... 19

Operating Instructions .................... 21

Cleaning the Air Filter ..................... 22

Motor Management ........................ 22

Adjusting the Carburetor ................ 23

Spark Arresting Screen*

in Muffler ......................................... 24

Checking the Spark Plug ................ 24

Lubricating the Gearbox ................. 25

Replacing the Starter Rope

and Rewind Spring ......................... 26

Storing the Machine ........................ 28

Replacing the Depth Wheel /

Gearbox Wheel .............................. 29

Replacing the Skirt ......................... 29

Replacing the Cutting Blade ........... 31

Checking and Replacing

the Wear Guard .............................. 31

Maintenance Chart ......................... 33

Parts and Controls .......................... 34

Specifications ................................. 36

Special Accessories ....................... 37

Maintenance and Repairs ............... 37

STIHL Incorporated

Federal Emission

Control Warranty Statement ........... 38

* see “Guide to Using this Manual”

Allow only persons who understand this

manual to operate your edger.

To receive maximum performance and

satisfaction from your STIHL edger, it is

important that you read and understand

the maintenance and safety precautions

,

starting on page 3, before using your

edger.

Contact your STIHL dealer or the STIHL

distributor for your area if you do not

understand any of the instructions in this

manual.

!Warning!

Because an edger is a high-speed

cutting tool some special safety

precautions must be observed to reduce

the risk of personal injury.

Careless or improper use may cause

serious or even fatal injury. Make sure

your unit is equipped with the proper

deflector and handle for the type of

cutting attachment being used. Always

wear proper eye protection.

STIHL's philosophy is to continually

improve all of its products. As a result,

engineering changes and improve-

ments are made from time to time. If the

operating characteristics or the appear-

ance of your edger differs from those

described in this manual, please contact

your STIHL dealer for information and

assistance.

2

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FC 85

Pictograms

All the pictograms attached to the

machine are shown and explained in

this manual.

The operating and handling instructions

are supported by illustrations.

Symbols in text

The individual steps or procedures

described in the manual may be marked

in different ways:

: Step or procedure without direct

reference to an illustration.

Description of step or procedure that

refers directly to the illustration and

contains item numbers that appear in

the illustration.

Example:

Loosen the screw (1)

Lever (2) ...

In addition to the operating instructions,

this manual may contain paragraphs

that require your special attention. Such

paragraphs are marked with the

symbols described below:

Warning where there is a risk of an

accident or personal injury or

serious damage to property.

Warning where there is a risk of

damaging the machine or individual

components.

Note or hint which is not essential

for using the machine, but may

improve the operator’s under-

standing of the situation and result

in better use of the machine.

Note or hint on correct procedure in

order to avoid damage to the

environment.

Equipment and features

This instruction manual refers to

several models with different

features. Components that are not

installed in all models and related

applications are marked thus

*.

Such components are available as

special accessories from your

STIHL dealer.

Engineering improvements

STIHL’s philosophy is to continually

improve all of its products. As a result,

engineering changes and improvements

are made from time to time. If the

operating characteristics or the

appearance of your machine differ from

those described in this manual, please

contact your STIHL dealer for

assistance.

Therefore, we cannot be responsible for

changes, modifications or

improvements not covered in this

manual.

Guide to Using this Manual

3FC 85

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Warning!

Because an edger is a

high-speed, fast-cutting

power tool, special safety

precautions must be

observed to reduce the risk of personal

injury.

It is important that you

read, fully understand and

observe the following

safety precautions and

warnings. Save this

owner's manual and read

the safety instructions periodically. Be

thoroughly familiar with the controls and

the proper use of the equipment. Know

how to stop the unit and disengage the

controls quickly.

Careless or improper use of any edger

may cause serious or fatal injury.

Have your STIHL dealer show you how

to operate your edger. Observe all

applicable local safety regulations,

standards and ordinances.

!Warning!

The use of any edger may be

hazardous. If the rotating cutting tool

comes in contact with your body, it will

cut you. When it comes in contact with

solid foreign objects such as rocks or

bits of metal, it may fling them directly or

by ricochet in the direction of bystanders

or the operator.

Striking such objects could damage the

cutting attachment and may cause

blades to crack, chip or break. Thrown

objects or damaged blades may result in

serious or fatal injury to the operator or

bystanders.

!Warning!

Minors should never be allowed to use

an edger. Bystanders, especially child-

ren and animals should not be allowed in

the area where an edger is in use.

Never let the edger run unattended.

!Warning!

Do not lend or rent your edger without

the owner's manual. Be sure that any-

one using your edger understands the

information contained in this manual.

Most of these safety precautions and

warnings apply to the use of all STIHL

edgers. Different models may have

different parts and controls. See the

appropriate section of your owner's

manual for a description of the controls

and function of the parts of your model

edger.

Safe use of an edger involves

1. the operator

2. the edger

3. the use of the edger.

Save these instruction !

THE OPERATOR!

Physical Condition

You must be in good physical condition

and mental health and not under the

influence of any substance (drugs,

alcohol, etc.) which might impair vision,

dexterity or judgment. Do not operate an

edger when you are fatigued.

Be alert - if you get tired while operating

your edger, take a break.

Tiredness may result in loss of control.

Working with any edger can be

strenuous. If you have any condition that

might be aggravated by strenuous work,

check with your doctor before operating

an edger.

Safety Precautions

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!Warning!

Prolonged use of an edger (or other

machines) exposing the operator to

vibrations may produce whitefinger

disease (Raynaud's phenomenon) or

carpal tunnel syndrome. These con-

ditions reduce the hand's ability to feel

and regulate temperature, produce

numbness and burning sensations and

may cause nerve and circulation

damage and tissue necrosis.

All factors which contribute to white-

finger disease are not known, but cold

weather, smoking and diseases or

physical conditions that affect blood

vessels and blood transport, as well as

high vibration levels and long periods of

exposure to vibration are mentioned as

factors in the development of whitefinger

disease. In order to reduce the risk of

whitefinger disease and carpal tunnel

syndrome, please note the following:

: Most STIHL power tools are

available with an anti-vibration

("AV") system designed to reduce

the transmission of vibrations

created by the engine to the

operator's hands. An AV system is

recommended for those persons

using power tools on a regular or

sustained basis.

: Wear gloves and keep your hands

warm.

: Keep the AV system well

maintained. An edger with loose

components or with damaged or

worn AV buffers will tend to have

higher vibration levels.

: Maintain a firm grip at all times, but

do not squeeze the handles with

constant, excessive pressures, take

frequent breaks.

All the above mentioned precautions do

not guarantee that you will not sustain

whitefinger disease or carpal tunnel

syndrome. Therefore continual and

regular users should monitor closely the

condition of their hands and fingers. If

any of the above symptoms appear,

seek medical advice immediately.

!Warning!

The ignition system of your unit

produces an electromagnetic field of a

very low intensity. This field may

interfere with some pacemakers. To

reduce the risk of serious or fatal injury,

persons with pacemaker should consult

their physician and the pacemaker

manufacturer before operating this tool.

Proper Clothing

!Warning!

Edger operation can

cause serious injury to

eyes, ears and person.

The deflector and skirt

provided with your edger

may not protect the

operator from all foreign objects (gravel,

glass, wire, etc.) thrown by the rotating

cutting attachment. Thrown objects may

also ricochet and strike the operator. To

reduce the risk of injury to your eyes

never operate an edger unless wearing

goggles or properly fitted safety glasses

with adequate top and side protection

complying with ANSI Z 87.1 (or your

applicable national standard).

To reduce the risk of injury to your face

STIHL recommends that you also wear

a face shield or face screen over your

goggles or safety glasses.

5FC 85

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!Warning!

Edger noise may damage

your hearing. Wear sound

barriers (ear plugs or ear

mufflers) to protect your

hearing. Continual and

regular users should have

their hearing checked regularly.

Wear proper protective clothing.

Protect your hands with

gloves when handling the

edger and the cutting tool.

Heavy-duty, nonslip

gloves improve your grip

and protect your hands.

Clothing must be sturdy

and snug-fitting, but allow

complete freedom of

movement. Avoid loose-

fitting jackets, scarfs,

neckties, jewelry, flared or

cuffed pants, unconfined long hair or

anything that could become caught on

branches, brush or moving parts of the

unit. Wear long pants made of heavy

material to protect your legs. Do not

wear shorts.

Good footing is most

important in edger work.

Wear sturdy boots with

nonslip soles. Do not

operate edger when

barefoot or wearing open

sandals. Steel-toed safety boots are

recommended.

Wear an approved safety

hard hat to reduce the risk

of injury to your head

when there is a danger of

head injuries.

THE EDGER

For illustrations and definitions of the

edger parts see the chapter on

“Parts and Controls“!

!Warning!

Never modify an edger in any way.

Only attachments supplied by STIHL or

expressly approved by STIHL for use

with the specific STIHL edger models

are authorized. Although certain un-

authorized attachments are useable for

the STIHL edger, their use may, in fact,

be extremely dangerous.

THE USE OF THE EDGER

Transporting the edger

!Warning!

Always turn off the engine and make

sure the cutting attachment has stopped

before putting an edger down. When

transporting your edger in a vehicle,

properly secure it to prevent turnover,

fuel spillage and damage to the edger.

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Preparation for the use of the edger

Adjust carrying harness and hand grip to

suit your size before starting work.

The machine should be properly

balanced as specified in your owner's

manual for proper control and less

fatigue in operation.

Always check your edger for proper

condition and operation before starting,

particularly the throttle trigger, throttle

trigger interlock (and if applicable, stop

switch, cutting tool, deflector and

harness). An arrow on the deflector

shows the correct direction of rotation of

the cutting blade.

The arrow on the deflector must always

face away from you, so that cuttings and

other dedris will be diverted away from

the machine and your position (see

chapter "Working Techniques").

The throttle trigger must move freely and

always spring back to the idle position.

The cutting tool must be properly

tightened and in safe operating

condition. Inspect for loose parts (nuts,

screws, etc.) and for cracked, bent,

warped or damaged blades.

Fueling

Your STIHL edger uses an oil-gasoline

mixture for fuel (see the chapter on

“Fuel“ of your owner's manual).

!Warning!

Gasoline is an extremely

flammable fuel. If spilled

or ignited by a spark or

other ignition source, it

can cause fire and serious

burn injury or property

damage. Use extreme caution when

handling gasoline or fuel mix.

Do not smoke or bring any fire or flame

near the fuel.

Fueling Instructions

Fuel your edger in well-ventilated areas,

outdoors. Use a fuel container

acceptable for the purpose.

!Warning!

Never attempt to fuel a running or hot

engine. Gasoline vapor pressure may

build up inside the gas tank depending

on the fuel used, the weather conditions,

and the venting system of the tank. In

order to reduce the risk of burns or other

per-sonal injury from escaping gas

vapor and fumes, remove the fuel filler

cap on your edger carefully so as to

allow any pressure build-up in the tank

to release slowly. Never remove fuel

filler cap while engine is running.

Select bare ground for fueling and move

at least 10 feet (3 m) from the fueling

spot before starting the engine.

Replace fuel filler cap securely and

check for tightness.

Wipe off any spilled fuel before starting

your edger and check for leakage.

245BA002 KN

7FC 85

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!Warning!

Check for fuel leakage while refueling

and during operation. If fuel or oil

leakage is found, do not start or run the

engine until leak is fixed and spilled fuel

has been wiped away.

Move at least 10 feet (3 m) from spot of

leakage before starting. Take care not to

get fuel on your clothing. If this happens,

change your clothing immediately.

The fuel filler cap may differ on different

models.

Cap with handle

!Warning!

To minimize the risk of fuel leakages and

fires due to a loose filler cap, it must be

inserted in the filler port correctly and

tightened down.

Lift the handle on top of

the STIHL filler cap so

that it is upright. Insert the

cap so that the triangular

mark on the handle is

aligned with that on the

filler port. Then turn the handle on the

filler cap as far as possible in clockwise

direction (approx. one-quarter turn).

Fold the handle down so

that it lies flat in the filler

cap. The cap has not

been fitted correctly if the

handle does not lie flush

with the filler cap and the

lock on the handle does not fit into the

corresponding recess in the filler port.

The cap must be refitted in this case.

Screw-on filler cap

! Important!

If the filler cap is not

screwed down tightly,

it may work loose as a

result of vibrations in the

machine, thus causing

considerable fuel

leakages. To avoid fires, the filler cap

must be screwed down as tightly as

possible after refueling. If the filler cap

has a slot, the screwdriver end of the

STIHL combination wrench or a similar

tool can be used to tighten down the

cap.

Starting

!Warning!

Your edger is a one-person machine.

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Once started, it may fling foreign objects

for a great distance.

To reduce the risk of eye and other injury

insure that bystanders are at least

50 feet (15 m) away. Stop the engine

and cutting tool immediately if you are

approached.

Start and operate your edger without

assistance. For specific starting

instructions, see the appropriate section

of your manual.

Place the edger on firm ground or other

solid surface in an open area. Maintain a

good balance and secure footing.

To reduce the risk of injury from loss of

control, be absolutely sure that the

cutting tool is clear of you and all other

obstructions and objects, including the

ground, because when the engine starts

at starting-throttle, engine speed will be

fast enough for the clutch to engage and

turn the cutting tool.

When you pull the starter grip, don't

wrap the starter rope around your hand.

Do not allow the grip to snap back, but

guide the starter rope to rewind properly.

Failure to follow this procedure may

result in injury to hand or fingers and

may damage the starter mechanism.

Working Conditions

Operate and start your edger only

outdoors in a well ventilated area.

!Warning!

Your edger produces toxic

exhaust fumes as soon as

the engine is running.

These gases (e.g.

carbonmonoxide) may be

colourless and odourless.

To reduce the risk of serious or fatal

injury from inhaling toxic fumes, never

run the edger indoors or in poorly

ventilated locations.

!Warning!

Use of this product can generate dust

and fumes containing chemicals known

to cause respiratory disease, cancer,

birth defects, or other reproductive

harm. If you are unfamiliar with the risks

associated with the particular dust or

fume at issue, consult your employer,

governmental agencies such as OSHA

and NIOSH and other sources on

hazardous materials. California and

some other authorities, for instance,

have published lists of substances

known to cause cancer, reproductive

toxicity, etc.

Control dust and fumes at the source

where possible. In this regard use good

work practices and follow the

recommendations of OSHA/NIOSH and

occupational and trade associations.

When the inhalation of toxic dust and

fumes cannot be eliminated, the

operator and any bystanders should

always wear a respirator approved by

NIOSH/MSHA for the type of dust and /

or fumes encountered.

15m (50ft)

9FC 85

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Operate the edger under good visibility

and daylight conditions only. Work

carefully.

Always hold the edger firmly with both

hands. Wrap your fingers tightly around

the handles, keeping the handles

cradled between your thumb and

forefinger. Keep your hands in this

position to have your edger under

control at all times.

Make sure your edger handles and grip

are in good condition and free of

moisture, pitch, oil or grease.

!Warning!

Never attempt to operate any edger with

one hand. Loss of control of the edger

resulting in serious or fatal injury may

result.

Special care must be taken in slippery

conditions (wet ground, snow) and in

difficult, over-grown terrain. Watch for

hidden obstacles such as tree stumps,

roots and ditches to avoid stumbling.

Stay alert for uneven side walks, holes in

terrain or other similiar conditions when

using your edger. Always push slowly

over rough ground. Do not abuse your

edger.

!Warning!

Before cutting, inspect

and clear the area of

stones, glass, pieces of

metal, trash or other solid

objects. The cutting

attachment could throw

objects of this kind and cause personal

injury.

Do not use edger on gravel surfaces.

!Warning!

Never divert discharge of material

toward bystanders nor allow anyone

near the area of operation. Use care in

directing discharge to avoid glass

enclosures, automobiles, and the like.

!Warning!

To reduce the risk

of injury from

thrown objects and

blade contact,

never operate an

edger without properly mounted

deflector and skirt. Do not overreach.

Keep proper footing and balance at all

times.

!Warning!

To reduce the risk of injury

from blade contact, keep

hands and feet away from

cutting area.

!Warning!

This edger is normally to be used at

ground level with the cutting attachment

perpendicular to the ground. Use of an

edger above ground level or with the

cutting attachment parallel to the ground

may increase the risk of injury, since the

cutting attachment is more fully exposed

and the edger may be more difficult to

control. Never use your edger as a

hedge trimmer.

002BA117 KN

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!Warning!

When using your edger, avoid cutting

close to fences, sides of buildings, tree

trunks, stones or other such objects that

could cause the edger to kick out or

could cause damage to the blade. In

addition, be alert to an increased risk of

ricochets in such situations.

If the edger strikes a foreign object,

follow these stops: stop the engine,

disconnect spark plug lead, inspect for

damage and repair any damage before

restarting and operating the product.

Do not operate using the starting throttle

lock as you do not have control of the

engine speed. See section of your

owner's manual on the proper use of the

slide control.

If the cutting tool or deflector becomes

clogged or stuck, always turn off the

engine, disconnect spark plug lead and

make sure the cutting tool has stopped,

before cleaning. Keep lead away from

spark plug to reduce the risk of un-

intentional starting. Grass, weeds, etc.

should be cleaned off the cutting tool at

regular intervals.

!Warning!

During cutting, check the tightness and

the condition of the cutting tool at regular

intervals. If the behavior of the tool

changes, stop the engine immediately,

and check the nut securing the tool for

tightness and the cutting tool for cracks

and damage.

If the edger vibrates abnormally, imme-

diateley stop the engine and check for

the cause. Vibration is generally a

warning of trouble. Replace cracked,

bent, warped, damaged, excessively

worn or dull cutting tools immediately.

Such tools may shatter at high speed

and cause serious or fatal injury.

!Warning!

A loose blade may cause the blade to

vibrate, crack, break or come off the

edger, which may result in serious or

fatal injury. Make sure that the blade is

properly tightened. Use the wrench

supplied or one of sufficient length to

obtain the proper torque. If the blade

loosens after being properly tightened,

stop work immediately. The retaining nut

may be worn or damaged and should be

replaced.

Never use unauthorized parts to secure

the blade. Failure to use the proper parts

may cause the blade to fly off and

seriously injury the operator or

bystanders. If the blade continues to

loosen, see your STIHL dealer. Do not

attach any blade to a unit without proper

installation of all required parts. Never

use an edger with a loose blade.

!Warning!

Never touch a rotating cutting tool with

your hand or any part of your body. The

tool continues to rotate for a short period

after the throttle trigger is released

(flywheel effect).

Important adjustments

!Warning!

At correct idle speed, the cutting tool

should not turn. For directions on how to

adjust idle speed, see the appropriate

section of your owner's manual.

Do not use an edger with incorrect idle

speed adjustment. You may adjust the

idle speed yourself according to the

instructions in your manual. If you

cannot set the correct idle speed, have

your STIHL dealer check your edger and

make proper adjustments or repairs.

11FC 85

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Operating instructions

Use only for edging in grass, weeds and

soft green plants.

!Warning!

During operation, follow all safety

precautions mentioned in the important

safety precaution section of this manual.

Improper use of any edger can cause

serious or fatal personal injury.

In order to reduce risk of eye injury

always wear proper eye protection and

operate product from position where

guards or deflector blocks the line of

sight to the cutting tool.

Stop the engine whenever you leave the

operating position.

Maintenance, Repair and Storing

Maintenance, replacement, or repair

of the emission control devices and

systems may be performed by any

nonroad engine repair establishment

or individual. However if you claim

warranty for a component which has

not been serviced or maintained

properly or if nonapproved

replacement parts were used, STIHL

may deny warranty.

Use only identical STIHL replacement

parts for maintenance and repair. Use of

parts manufactured by others may

cause serious or fatal injury.

Follow the maintenance and repair

instructions in the appropriate section of

your owner's manual. Please refer to the

maintenance chart at the last pages of

this manual.

!Warning!

Always stop the engine, disconnect the

spark plug lead and make sure that the

cutting tool is stopped before doing any

maintenance or repair work or cleaning

the edger.

Keep lead away from spark plug to

reduce the risk of unintentional starting.

Never attempt to make any adjustments

while the engine is running (except

where specifically recommended in this

manual).

Do not attempt any maintenance or

repair work not described in your

owner's manual. Have such work

performed at your STIHL service shop

only. Do not modify the engine governor

or overspeed the engine.

Never repair damaged cutting

attachments by welding, straightening or

modifying the shape. This may cause

parts of the cutting tool to come off and

result in serious or fatal injuries.

Check condition of cutting tool at regular

short intervals. If behavior of tool

changes, check it immediately for

tightness or any signs of cracks in

particular. Replace damaged or dull

cutting tools immediately, even if they

have only superficial cracks.

Check fuel filler cap for leaks at regular

intervals. Use the specified spark plug

and make sure it and the ignition lead

are always in good condition.

12

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!Warning!

A worn or damaged muffler is a fire

hazard and may cause loss of hearing.

Check to see that the muffler is in good

condition. The edger must not be

operated if the muffler is not functioning

properly or has been removed.

Remember that the risk of forest fires is

greater in hot weather.

Use the spark arresting muffler supplied

with the unit. Never touch a hot muffler

or burn will result.

!Warning!

In order to reduce the risk of fire, do not

modify or remove any part of the muffler

or spark arrestor.

Tighten all nuts, bolts and screws except

the carburetor adjustment screws after

each use.

Keep spark plug and wire connection

tight and clean. The spark plug electrode

gap should be checked with a feeler

gauge at least every 50 operating hours

and reset if necessary. Fit a new spark

plug if the electrodes are badly pitted.

Additionally, the daily maintenance

schedule for your edger set forth in your

STIHL Owner's Manual should be

strictly followed.

For any maintenance please refer to the

maintenance chart and to the warranty

statement near the end of this manual.

Store edger indoors in a dry, high or

locked location out of reach of children.

Before storing for longer than a few

days, always empty the fuel tank.

Never store the machine with fuel in the

fuel tank inside a building where fumes

may reach an open flame or sparks, or in

a confined area such as a car trunk.

Your power edger is designed to

produce sharp contoured borders

around lawns and flower beds. It will cut

almost all types of grass, weeds and soft

green plants.

Preparations

If the soil is very dry, spray it with water

before you start work: this softens the

soil a little and also reduces the amount

of dust created. Slightly damp green

plants are easier to cut.

: Inspect the work area and clear

away any obstacles (stones, gravel,

glass, etc.) to reduce the risk of

injury from thrown objects.

: Plan the best route for edging, i.e.

starting point, changes in direction,

etc. Always hold and operate your

edger on the right-hand side of the

body.

Working Techniques

245BA003 KN

13FC 85

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Adjusting the depth of cut

: Shut off the engine and wait for the

cutting blade to come to a complete

standstill.

: Loosen wingnut (1)

counterclockwise

: Adjust wheel (2):

Upwards

to increase depth of cut (A).

Downwards

to reduce depth of cut (A).

Adjust correctly

The depth of cut varies, depending

on unevenness, your height and the

way you hold the edger.

: Use the following procedure:

Adjust the wheel (2) so that the

cutting blade (3) just touches the

ground or breaks the surface of the

soil by no more than 0.2" / 5 mm (B)

in the normal working position.

Do not adjust the deflector!

The deflector has been set by the

manufacturer so that the arrow on the

deflector and the open side point away

from the operator. This ensures that

cuttings and other debris will be directed

away from the machine and operator.

A

1

2

245BA004 KN

2

B

245BA005 KN

3

245BA006 KN

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: Tighten wingnut clockwise.

: Standing in the normal working

position, check the depth of cut

again and correct it if necessary.

Edging

: Start the engine.

: Start the cut at half throttle and

continue cutting at full throttle.

: Hold and guide the unit so that the

blade is vertical.

: Cut steadily so that the engine

speed does not decline to any major

extent – do not apply force!

: Cut at a normal walking pace.

: Do not push the blade into the

ground!

: Always walk forwards when cutting,

do not pull the unit towards you.

: Cut at a steady pace to avoid having

to make several passes.

1 = Gunning sight for cutting blade.

245BA007 KN

245BA008 KN

90°

245BA009 KN

1

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: Fit the loop handle (1) on the drive

tube 8" / 20 cm (A) forward of the

control handle (2).

: Position the clamp (3) against the

drive tube and slide it into the loop

handle.

: Fit square nut (4) in the loop handle,

insert the clamp screw (5) from the

other side and tighten down

securely.

Adjusting loop handle to most

comfortable position:

: Release clamp screw (5).

: Move the loop handle along the

drive tube as required - retighten the

clamp screw.

A properly adjusted throttle cable is

the precondition for correct

operation in the full throttle, starting

throttle and idle positions.

Adjust the throttle cable only after

the unit is fully assembled – the

handle must be in the normal

operating position.

: Use a suitable tool to push the slide

to the bottom of the slot (see

illustration).

* see "Guide to Using this Manual"

Mounting the Loop Handle

3

355BA030 KN

1

2

A

343BA023 KN

5

4

50 mm

( 2" )

Adjusting the Throttle

Cable*

002BA163 KN

16

English / USA

FC 85

: Press down the trigger interlock (1)

and squeeze the throttle trigger (2)

all the way (full throttle position) –

this sets the throttle cable correctly.

: Place the power edger on a

suitable support so that the blade

mounting (1) faces upwards.

: Insert stop pin* or Allen wrench* (2)

as far as possible in the bore (3) –

push lightly and rotate it back and

forth together with the thrust

washer (4) until the drive shaft is

blocked.

: Apply combination wrench (5) to

screw (6).

: Loosen screw clockwise (left-hand

thread) and take it out.

: Remove retaining ring, plain washer

and thrust washer.

* see "Guide to Using this Manual"

2

1

002BA161 KN

Fitting the Cutting Blade

1

245BA010 KN

6

3

406BA005 KN

2

4

5

17FC 85

English / USA

: Position blade (7) on the thrust

plate (8).

Collar (see arrow) must engage

hole in blade!

: Fit thrust washer (4) on the drive

shaft (9).

: Block the drive shaft.

: Insert screw (12) with plain washer

(10) and retaining ring (11) in shaft

counterclockwise and tighten down

firmly.

This engine is certified to operate on

unleaded gasoline and the STIHL two-

stroke engine oil at a mix ratio of 50:1.

Your two-stroke engine requires a

mixture of brand-name gasoline and

quality two-stroke air cooled engine oil.

Use mid-grade unleaded gasoline with a

minimum octane rating of 89 (R+M/2). If

the octane rating of the mid-grade

gasoline in your area is lower, use

premium unleaded fuel.

Fuel with a lower octane rating may

increase engine temperatures. This, in

turn, increases the risk of piston seizure

and damage to the engine.

The chemical composition of the fuel is

also important. Some fuel additives not

only detrimentally affect elastomers

(carburetor diaphragms, oil seals, fuel

lines, etc.), but magnesium castings and

catalytic converters as well. This could

cause running problems or even

damage the engine. For this reason

STIHL recommends that you use only

nationally recognized name brand

unleaded gasoline!

Use only STIHL two-stroke engine oil or

equivalent branded two-stroke engine

oils that are designed for use only in air

cooled two-cycle engines.

We recommend STIHL 50:1 two-stroke

engine oil since it is specially formulated

for use in STlHL engines.

Do not use BIA or TCW rated (two-

stroke water cooled) mix oils or other

mix oils that state they are for use in both

water cooled and air cooled engines

(e.g., outboard motors, snowmobiles,

chain saws, mopeds, etc.).

Take care when handling gasoline.

Avoid direct contact with the skin and

avoid inhaling fuel vapor. When filling at

the pump, first remove the canister from

your vehicle and place the canister on

the ground before filling. Do not fill fuel

canisters that are sitting in or on a

vehicle.

The canister should be kept tightly

closed in order to avoid any moisture

getting into the mixture.

The machine‘s fuel tank and the canister

in which fuel mix is stored should be

cleaned as necessary.

8

4

7

406BA006 KN

9

10

11

12

7

Fuel

18

English / USA

FC 85

Fuel mix ages

Only mix sufficient fuel for a few days

work, not to exceed 3 months of storage.

Store in approved fuel-canisters only.

When mixing, pour oil into the canister

first, and then add gasoline. Close the

canister and shake it vigorously by hand

to ensure proper mixing of the oil with

the fuel.

Dispose of empty mixing-oil canisters

only at authorized disposal locations.

Before fueling, clean the filler cap and

the area around it to ensure that no dirt

falls into the tank.

Always thoroughly shake the mixture in

the canister before fueling your

machine.

In order to reduce the risk of burns

or other personal injury from

escaping gas vapor and fumes,

remove the fuel filler cap carefully

so as to allow any pressure build-up

in the tank to release slowly.

After fueling, tighten fuel cap as

securely as possible by hand.

Change the fuel pick up body every

year.

Before storing your machine for a long

period, drain and clean the fuel tank and

run engine until carburetor is dry.

Gaso-

line

Oil (STIHL 50:1 or

equivalent branded oils)

US gal. US fl.oz

12.6

2 1/2 6.4

512.8

Fueling

389BA031 KN

389BA032 KN

19FC 85

English / USA

Controls

Throttle trigger interlock (1), throttle

trigger (2) and slide control (3) with

positions:

START (4),

# – normal run position (5) and

$ – stop (6).

To stop the engine: Push the slide

control in direction of c (7).

Starting

: Hold down the throttle trigger

interlock and squeeze the throttle

trigger.

: While holding both levers in this

position, move the slide control to

START and hold it there.

: Now release the throttle trigger,

slide control and trigger interlock in

that order. This is the starting

throttle position.

: Set the choke lever (8):

For cold start to

g

For warm start to e

Also use this setting if engine has

been running but is still cold.

: Press the fuel pump bulb (9) at least

five times – even if bulb is filled with

fuel.

Starting / Stopping

the Engine

7

3

2

3

1

STOP

4

5

6

002BA179 KN

393BA017 KN

8

393BA018 KN

9

20

English / USA

FC 85

: Place the unit on the ground: It must

rest securely on the engine support

and the cutting tool deflector. Check

that the cutting tool is not touching

the ground or any other obstacles.

: Make sure you have a firm footing.

: Hold the unit with your left hand and

press it down firmly – your thumb

should be under the fan housing.

Do not stand or kneel on the drive

tube! This could permanently

damage the drive tube..

: Pull the starter grip slowly with your

right hand until you feel it engage

and then give it a brisk strong pull.

Do not pull out the starter rope all

the way – it might otherwise break.

: Do not let the starter grip snap back.

Guide it slowly back into the housing

so that the starter rope can rewind

properly.

: Continue cranking until the engine

runs.

When engine begins to fire:

: Move the choke lever to e and

continue cranking.

As soon as engine runs:

: Blip the throttle trigger – the slide

control moves to the run position # –

and the engine settles down to idle

speed.

Make sure the carburetor is correctly

adjusted – cutting tool must not rotate

when the engine is idling.

Your machine is now ready for

operation.

To shut down the engine:

: Move the slide control in direction of

c to $.

At very low outside temperatures:

As soon as engine runs:

: Blip the throttle trigger to disengage

the starting throttle position –

the slide control moves to the run

position # –

and the engine settles down to idle

speed.

: Open the throttle slightly and allow

engine to warm up for a brief period.

002BA038 KN002BA040 KN

245BA013 KN

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STIHL FC 85 User manual

STIHL FC 85 User manual

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